Tack-pulling machine.



L. G. WHITE. TACK FULLINGMACHINE.

APPLICATION FILED MAY 4, I9I2.

Patented Mar. 7, 1916.

2 SHEETS-SHEET I'.

L" G; WHITE.

TACK PULLlNG MACHINE; APPLICATION FILED MAY 4, 1912.

2 SHEETS-SHE Ifwr Patented Mar. 16.

To dll/whom it may concern: f

A provi de 'LLoYn G, WHITE, 0E HAVEEHIL'L, MASSACHUSETTS, AssIGNoR To YUNITED sHoE MACHINERY coMrANjY, 'oErATERsoN NEW JERSEY, A CORPORATION 0E NEW JERSEY.'

Appiicaaon inea May 4, 1912. serial No. 695,293.V

, Be it known that I, LLOYDV citizen of the United StatesreSidingat Haverhill, in the county of Essex` and StateV of Massachusetts, havev Y, invented certain new and useful improvements in Tack-Pullingr Machines; and I do hereby dec-lare the following to loe a full,.clear,y and exact description .ofthe invention, such as will en# able othersskilled in theY artto which itappertains to make and use the same. c

The present invention relates to machines for operating upon boots and shoes, and

more particularly to machines of this type which are employed for removing the tem-Y porary fasteners which are inserted during;

the manufacture of the shoe:

The object of the present invention is to ter which operateseliiciently to remove both sidea-nd insoletacks. l

l l/Vith this object in view. the variousfealtures of the invention consist in certainnovel featuresof construction.' combinations and arrangements of parts hereinafterdescribed'-.

and'claimed, the advantagesof which willr be obviousfto those skilled in' the art from the following description. Y

In the accoimpanying` drawings illustrating the preferred form ofthe invention;

Figure 1 represents an elevation of a ma-v chine embodying the several features of the invention in their preferred formyFig. 2

is a detail showing a froiitrel'evation 'of the tack pulling` jawsand a'portion of the operating mechanism tlierefor;Fig.3 isa detail showingi a partial'side elevation of the tack pulling jaws and operating mechanism when engaged in removing a sidectack from al shoe; and Fier. 4 is a deta'il illustratingthe tack pulling jaws and cooperating; foot whenengaged in removing an insole tack from a shoe. f j

The present invention y chine consisting essentially of two cop'erating tack pulling jaws and suitable actuating? mechanism therefor 'to impart to` the aws tack engagingvta ck pulling` and tack releasing movements in the sequence named. `The tack` pulling movement which takes place ina linear directionlto pull the tack substan TACK-PULLING MACHINE.'

G. WHITE,

an improved machine of this charac,

is embodied in a mar Patented Mar. 7? 1916.-

tiallyvin the direction of its length. -In the preferred Vformof the iiivention, theftack pulling' jaws are first caused to descend beneath the heard of the tack and are then advanced towardthe tack and simultaneously moved toward one another to position them beneath the head of the tack and cause them to grip the tack firmly. VIt is desirable particularly when removing insoletacks to iinpart a series of short quick movements to thejaws toward and from the tack to cause them to dig into the sole and engage beneaththe head of the tack yand to this end i a plurality of opening and closing move ments are imparted to thejaws when they are positioned upon opposite sides of the tack. yAs the insole tacks are' often ein#y bedded deeply in -the sole?- it is desirable toj support them againstthe thrust of the tack pulling jawsfand thus prevent the bending- 'over or breaking ofl" of the tack in the shoe. In the simplestand-most eliicient form of the invention lwhich has vet beendevised, this is accomplished bythe provision of a :movable foot which engages Athe .head O1" the tack oppositejthe tack pulling jaws and maintains the tack in an upright position during' itsremoval' from the shoe. l

y VIn the machine shown inthe drawings. the two tackpulling jaws are indicated at 1 and 2 andare supported upon the outer end'of a jaw carrvino arm 3 pivotally connected to the frame of the'fmachine at ll. The arm 3 is actuated rbv a cam 6 secured to a cam shaft 8 journaledin the machine frame and continuously rotated by a drive pullev 10. The cam 6 oscillates thearm l3 in a vertical direction about" the fiilcrum 4 'to cause the tack pulling jaws to approach toward and recede from the shoe.y The two iaws are pivotally connectedby a stud 12 which is secured Vin a head 13 having; trunnions 14 journaled in the bifurcated outerend of the arm 3. Withy this construction'` the jaws" are enabled to., move towardand fromone another and'toy swing bodily/about the axis of the trunnions eol 14.'y The tension spring 15 connecting the *i upper ends'ofithe jaws serves to normally space theclowerends apart until closed bv a wedge-shaped cam-17 secured to the outer end of an arm k19 arranged to `move downy j bya ca'rfnZl secu-ifedtothe camv-shaft`8f. JustV "110r I prior to engaging with the tack, thejaws are rapidly opened and, closedl tocause them to dig into vthe solebeneath the head of the tack and `to this endrthe cam 21, is provided with a recess 22 and a cutaway portion 23 1n its periphery to cause the 'jaws to first move towardV one another, then separate andv finally close and grip the tack while it isbeing pulled. ln order to permit the arm 19 to follow the contour of the cam closely, it is 'provided with a depending lug 24 which is arranged to enter the recess'22. `.Both ofthe arms 3.and 19 are caused to permanently Vengage with their respective cams, by a tension spring. 27 connected aty its opposite ends to the arms and tending to draw them together.

The lowerv ends of the jaws are moved'sub-v stantially parallel to the plane of the sole byl an arm 25 having a forked outer end which is pivotally connected to the two jaws by a transverse stud 26. The arm 25 is actuated vbv an f eccentric secured to the shaft 8 and connectedto the arm through an eccentric strap formed integral therewith. The shoe is supported in the proper relation to the tack Ypulling jaws by a downhold-28 rigidlyse- -r cured to the frame of the machine and engaging with theshoe in close proximity to .the tack to be removed. VIn order to positively open the jaws and release the tack after it has been removed from the shoe, a wedge member 29 is rigidlypconnected to the downhold 28 and is arranged to engage between the lower ends of the jaws when they have reached 'the upper limit of movementv and are retracted by the arm 25. v

When removing insole'tacks, it is deslrable to provide means forrresistingthe side thrust uponthe tack and prevent an undue bending of the tack when engaged by the pulling jaws. To this end a movable foot 30 ispivotall'y connected at 31 toa rigid arm 32` jaws are spaced apartV in readiness to de-- scend and engage a taclnthe jaw suDDQrting arm 3 is rst oscillated about the fulcrum t to lower the jaws intoV a plane located beneath thehead of the tack and normal to the shank and which may be conveniently referred to asthe planev of the work. The lower tack engaging ends `of the jaws are then advanced by the arm 25,y and at the same time the jaws are moved toward one another bv the entrance of the wedge-shaped member 17 between the upper beveled ends of the jaws. As shown clearly in 2, the

j 2 Y Y 1,174,214

tack vengaging edgesof the aws arev oblique to one anotherl and the diagonal movement ofthe jaws'enables them to grasp a tack Viirmly beneathf the head without liability of beneath the head of the tack. After the jaws have closed upon the tack, the arm 3 is oscillated to yimpart a. tack pulling movement to the jaws in a substantially linear direction to remove the vtack in the directionL of its length, as shown clearly in Figs. 3 and 4.

During this upward or tackpulling movement of the jaws, the shoe'is held stationary by the downhold 28 and when the jaws have completed the removal of the tack from the shoe they are retractedbv the arm 25 and at the same time are, positivelyy opened by a wedge member-29 whichenters between the lower end of the jaws and serves to positively open them if thespring 15 fails to act. After the tack has been released,.the ,jawsV again descend and the cycle of operationsis repeated.

Y While it is` preferred to employ the speci fic construction and arrangement of parts shownand described, it fwill be understood that `this construction and arrangement is. not essential except so far as specified in the claims. and may be changed or modied without departing from the broader features of the invention.

The invention having been described, what is claimed is j n y1. A tackpulling machine having, in combination, a pair of coperatingtack .pulling jaws.-a downhold for Vpositioning the shoe relative to the jaws, and actuating mechanism for the'jaws arranged to impart simultaneously a bodily movement of the jaws towardthe tack and toward one another to cause the jaws to engage the tack and a tack pulling movement in a plane inclined to the direction of the tack'engaging movement to pull the tack in the direction of its length.

2. A tack pulling vmachine having, in combination, a pair of coperating tack pulling jaws, a downhold for positioning the shoe in the proper relation to the jaws, actuating mechanism for the jaws, and means coperating with the jaws and arranged to move into engagement with and hold the tack against the thrust of the tack pulling jaws during the engagement of the tack by the jaws.

A tack pulling machine having, in combination, a pair of coperating tack pulling tack pullingjaws pivoted to the outer endV of the arm, mechanism for .oscillating the arm to raise and lower the jaws, and mechanism for moving the jaws toward and fromV one another. Y

5. A tack pulling machine having, in combination, an arm, a pair of tack pulling jaws supported. upon the outer end of the farm, mechanism Jfor actuating the arm to raise and lower the jaws, means for moving the jaws toward and from one another, and

means for oscillating the two jaws about the arm to advance and retract the lower tack engaging ends of the jaws.

6. A tack pulling machine having, in combination, a pair of tack pulling jaws, ajaw supporting arm, mechanism for actuating Y 'the arm, means for advancing andretractmg tack to enable the the jaws, and means for positively opening the jaws when they are retracted to cause the tack to be released.

7 A tack pulling machinehaving, in com-l bination, a pair of coperating tack pulling jaws, a downhold for positioning the shoe relative to the jaws, and actuating mechanism for imparting a tack engaging movement to the jaws comprising va plurality of movements of the jaws toward and froml the jaws to engage beneath the head of the tack. f

8. A tack pulling machine having, in combination, a pair of cooperating tack pulling jaws, a downholdfor positioningthe shoe Vrelative to the jaws, mechanism for advancing the jaws toward the tack, and mechanism for imparting a plurality of opening and closing movements to the jaws when in close proximity to the tack to cause the jaws to engage beneath the head of the tack.

LLOYD G. WHITE.

, Witnesses: j

GEORGE W. PERKINS, HORACE Gr. COLBY.

Copies of this patent may be obtained for ve cents each, by addresspingvthe Commissioner of Patents,

Washington, D. C. c 

